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2142211211 = 7353866941
BaseRepresentation
bin111111110101111…
…1000110010001011
312112021221121022222
41333223320302023
513341401224321
6552323004255
7104041331510
oct17753706213
95467847288
102142211211
119aa249a98
124b950968b
13281a79cca
14164717307
15c81043ab
hex7faf8c8b

2142211211 has 8 divisors (see below), whose sum is σ = 2455179744. Its totient is φ = 1830977280.

The previous prime is 2142211199. The next prime is 2142211231. The reversal of 2142211211 is 1121122412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2142211211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2142211211.

It is not an unprimeable number, because it can be changed into a prime (2142211231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431000 + ... + 435941.

It is an arithmetic number, because the mean of its divisors is an integer number (306897468).

Almost surely, 22142211211 is an apocalyptic number.

2142211211 is a deficient number, since it is larger than the sum of its proper divisors (312968533).

2142211211 is an equidigital number, since it uses as much as digits as its factorization.

2142211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867301.

The product of its digits is 64, while the sum is 17.

The square root of 2142211211 is about 46284.0276013227. The cubic root of 2142211211 is about 1289.1024365469.

Adding to 2142211211 its reverse (1121122412), we get a palindrome (3263333623).

The spelling of 2142211211 in words is "two billion, one hundred forty-two million, two hundred eleven thousand, two hundred eleven".

Divisors: 1 7 353 2471 866941 6068587 306030173 2142211211